Gold-beater s hammer



2 Sheets-Sheet 1.,

(No l ipdel.) I

H. B. HUGHES.

GOLD BEATERS HAMMER.

v Patented Apr. 30, 1889.

I/Vl/E/VTOI? BY 5%, zfi 4 ATTORNEY.

g WITNESSES:

N. PETERS, Phcwulnnmher. Wnhin lcn, u. c.

(No Model.) 2 Sheets-Sheet 2.

, H. B.HU GHES.'

I GOLD BEATERS HAMMER.

llVl/E/VTO ATTORNEY,

Patented Apr. 30, 1889..

WITNESSES:

UNITED STATES PATENT OFFICE;

HENRY B. HUGHES, OF PHILADELPHIA, PENNSYLVANIA.

G OLD-BEATERS HAMMER.

SPECIFICATION forming part of Letters Patent No. 402,526, dated April 30, 1889.

Application filed January 31, 1889.

Serial No. 298,300. (No model.)

To all whom it may concern;

Be it known that I, HENRY B. HUGHES, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain new and useful Improvements in I-Iammers for Gold-Beating and Metal-Working, of which the following is a full and exact description, reference being hadto the annexed drawings, making part hereof.

The nature of my invention will fully appear from the following specification and claims.

In the drawings, Figure 1 is a broken plan view of my device, showing the shaft and operative mechanism and one hammer in place. Fig. 1* is a half cross-sectional view on the line 1 1 of Fig. 1; Fig. 2, a side elevation (partly in section) showing the hammer part of the actuating mechanism and the cushion with its support; Fig. 3, a detached front view of the cushion attachment. I

A is the revolving actuating-shaft; B B fast and loose pulleys, provided with belt 0; D, a fixed bearing around the shaft, secured by screws or bolts D through ears D D to the beam E, and having a projection, D, on one side; F, a cam or sinuous groove around the convex surface of proj ection D 5 G, an oscillating recessed block or sleeve around the end of projection D provided with a lug, H, cast integral therewith. I

I I are pins projecting through sleeve G and engaging in groove F. They are provided with plain necks I I, which pass through the plain openings in outwardly-screw-threaded nuts or bushings J J, which engage in the female screw-threaded bores in sleeve G. These nuts hold the pins in place;

K is a spline or feather set in the shaft A and engaging loosely in a corresponding groove in part G of sleeve G, whereby this sleeve is turned by the shaft and with it,while the spline permits its lateral oscillating movement, the latter movement being imparted to it by the action of pin I insinuous groove F.

L is a sleeve loosely enveloping the shaft A, and provided with an annular recess, L. This sleeve is held in place by rigidly-fixed collars M M on the shaft; but it turns freely between these collars. A band, N, passes around this sleeve L in groove L, and the ends N N of this band hold the handle 0 of the hammer between them.

P is the hammer; Q, the anvil on which the metal to be worked or beaten is set. The hammer is secured to handle 0 bya band, B, which passes around its neck and is bolted securely to the handle.

S is a cross-bar or block, secured by screws to the surface of sleeve L and adapted to receive the stroke of lug H.

T is a set-screw to secure band N to sleeve L and adjust the hammer-handle to a desired angle.

The parts H and S are beveled off at the point H of their contact to gradu atetheir separation after the stroke.

U is a standard supporting cross-beam U, to which latter arm U is attached. The lat ter terminatesin a ring. Screw-threaded rod V passes through this ring, and is held in place by screw-threaded nuts V V,by the turning of which the rod V can be adjusted to various heights.

W W are two long ears from plate W ,which sustain the cushion X, which latter in this instance is composed of layers of leather passed several times around .pins Y in the ends of ears W W. The butt or back of the hammer strikes this cushion as it is thrown up and rebounds therefrom. This cushion may be made of rubber and other elasticv materials or devices, and many forms of cushions will readily suggest themselves to the mind of an ordinarily-skilled mechanic.

The pm I, setting in the groove F, is repeated on the other side of sleeve G, and when one of the pins I reaches the extreme F of the curve or the upper part thereof (as it appears when holding up the drawings) the sleeve G is drawn so far back as to relieve lug H from contact with block S, and as the pinI reaches the lower part of the groove F sleeve G is thrown forward, so that lug H engages with block S to throw the hammer. By elongating sleeve L on the shaft and providing a number of annular grooves, L, therein any desired number of hammers can be rigged thereon, as already described of the one shown, the collar M abutting, as shown, against the lower end of sleeve L, whatever may be the length of the latter; but as this is mere duplication of what I have shown I shall give it no further description here. By these means my hammers are given a free but certain motion to deliver ously in one direction. Spline K upon the their blows and rebound, as in the case of hammers manipulated by hand.

The operation is as follows: The belt 0, operating pulley B, drives the shaft A continu- 1. The combination of s bearing D, provi sleeve G, the said 5 feather, K, setting in sleeve G to revo ing a groove, F, lug loose sleeve, L, an hammer P secure block S, secured to operated substanti 2. The 0 bearing D sleeve G, th feather, K,

provi e said s setting mbination of s ded with I in a corn 5p lve the la is g H, secured haft bein g E to all ese l rigidly sleeve L, ally as d led with raft bei in a C01 receives a throw upward, strikes the cushion X, and is thrown violently back upon the an vil Q, or upon any substance laid upon the lat ter from which it rebounds as it does when in the hands of an operator in the ordinary way.

in sleeve G, to revol G, engaging in groove F, sleeve G, a loose sleeve, L, and hammer-handle secured rigidly to sleeve L, sleeve L, and cushion X,

0, and hammer P, block S, secured t 1 ve the lat 1 .t A, elongated nous groove F, rovided with a ending groove er, pin I, engagto sleeve G, a d hammer-handle 0, and sleeve L, and combined and ribed. t A, elongated nous groove F, )rovided with a onding groove pin I in sleeve H, secured to While I speak of the part D" as an elonadapted to receive the hammer in its upward gation of the bearing, it, properly speaking,

throw and to cause its rebound, substantially for us no true part of the hearing as such, but is intended to indicate a stationary sleeve around the revolving shaft, in which may be set the groove F, and I wish the term I use to convey this generic meaning. The cushion X causes the hammer to rebound as the latter strikes it. By loosening set-screw T, thus leaving loose that part of band N which onvel ps sleeve L, any hammer can be thrown out of operation, as the band N thus becomes independent of the motion of sleeve L. While it would prevent any adjustment of the angle of t hand N might be made polygonal in form, and the part of sleeve L embraced by it may be of corresponding shape; but this would dispense with the set-screw T, while it would obviate reliance on a set-screw to stand the shock of the blow of the hammer without disturbance.

he hammer-handle by a set-screw, '1, the

WVhat I claim as new isas described.

3. The eombinai sleeve G, the said in sleeve G, to revol G, engaging in gr sleeve G, a loose s die 0, and hammer justably by set-son block S, secured to ion of shaft ve the latter, oove F, lug l leeve, L, and

elongated s groove F,

lng groove l in sleeve c cured to P, secured r sleeve L, all

operating substant In testimony whereof I presence of two witnesses.

YVitnesses:

rally as desc HENRY B H. W. NEWTON, EDWIN L. MCCONAUGHY.

' ly and ad awT to loose sleeve L, and

cc n ined and ribe natn re in HUGHES. 

